Lewisburg, KY 42256 Frost Dates
42256, near Lewisburg, KY: the frost window
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/28, roughly 200 days after the last spring frost.
Lewisburg sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Lewisburg's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Lewisburg against the rest of the dataset
Lewisburg's growing season runs about 200 days, ranking 17,864 of 40,283 US ZIP codes measured here, longest to shortest. Within KY, it ranks 270 of 909.
Learn more
Two guides worth reading on 42256: the frost range, on how to read the range around Lewisburg's dates instead of trusting one, and local microclimates, on what one yard in Lewisburg can differ from the 42256 normal.